US4167420A
Expired / Lapsed
US
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Process for dispersing pigments and fillers using aminoalkanols and salt, alkoxylation and quaternization derivatives thereof
Assignee: Henkel AG and Co KGaA
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Filing: 1978-08-02
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Granted: 1979-09-11
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Expires: 1998-08-02
Abstract
Abstract A process for improving the dispersibility of inorganic and organic pigments and fillers which comprises contacting said pigments and fillers with (a) a mixture of aminoalkanols of the formulae <IMAGE> (I) or <IMAGE> (II), wherein R1 and R2 are alkyl having 1 to 21 carbon atoms, the sum of the carbon atoms in R1 and R2 being 6 to 22, R3 is hydrogen or methyl, provided there is only one methyl group per (CH)x group, R4 and R5 are the same or different and are hydrogen, alkyl having 1 to 4 carbon atoms or hydroxyalkyl having 2 to 4 carbon atoms, x is an integer of from 2 to 6 and y is 0,1,2 or 3, the R1-CH-CH-R2 units in the aminoalkanols being of at least two different chain lengths of from 8 to 24 carbon atoms and the vicinal substituents being distributed statistically along said chain lengths, with the proviso that, if y is 0, R4 and R5 are not both hydrogen, or (b) salts, (c) alkoxylation products, and (d) quaternization products of said aminoalkanols, and recovering highly dispersible pigments and fillers.
Inventors
- 👤 Heinrich Linden
- 👤 Horst Rutzen
- 👤 Bernd Wegemund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:22
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0004; C09B67/0008; C09B67/0011; C09B67/002; C09C; C09C1/00; C09C1/22; C09C1/24; C09C1/36; C09C1/3692; C09C3/00; C09C3/006; C09C3/08; C09C3/10; C01; C01P; C01P2004/00; C01P2004/80; C01P2004/82; C01P2004/84
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
240 words
In a process for treating inorganic or organic pigments and fillers with a dispersing agent in order to improve their dispersibility in organic and aqueous media, the improvement comprising utilizing as the dispersing agent a member selected from the group consisting of (a) a mixture of vicinal aminoalkanols of the formulae ##STR6## wherein R 1 and R 2 are independently alkyl having 1 to 21 carbon atoms and the sum of the carbon atoms in R 1 and R 2 is from 6 to 22 inclusive, R 3 is a member selected from the group consisting of hydrogen and methyl, provided that there is only one methyl group per (CH) x group R 4 and R 5 are the same or different and are a member selected from the group consisting of hydrogen, alkyl having 1 to 4 carbon atoms and hydroxyalkyl having 2 to 4 carbon atoms, x is an integer of from 2 to 6 inclusive and y is 0, 1, 2 or 3, the ##STR7## units in the aminoalkanols being of at least two different chain lengths of from 8 to 24 carbon atoms inclusive, and the vicinal substituents being distributed statistically along said chain lengths, with the proviso that, if y is 0, R 4 and R 5 are not both hydrogen, (b) salts of said aminoalkanols, (c) alkoxylation products of said aminoalkanols with ethylene oxide and/or propylene oxide, and (d) quaternization products of said aminoalkanols.
Claim 2
Dependent Claim
240 words
In a process for treating inorganic or organic pigments and fillers with a dispersing agent in order to improve their dispersibility in organic and aqueous media, the improvement comprising utilizing as the dispersing agent a member selected from the group consisting of (a) a mixture of vicinal aminoalkanols of the formulae ##STR6## wherein R 1 and R 2 are independently alkyl having 1 to 21 carbon atoms and the sum of the carbon atoms in R 1 and R 2 is from 6 to 22 inclusive, R 3 is a member selected from the group consisting of hydrogen and methyl, provided that there is only one methyl group per (CH) x group R 4 and R 5 are the same or different and are a member selected from the group consisting of hydrogen, alkyl having 1 to 4 carbon atoms and hydroxyalkyl having 2 to 4 carbon atoms, x is an integer of from 2 to 6 inclusive and y is 0, 1, 2 or 3, the ##STR7## units in the aminoalkanols being of at least two different chain lengths of from 8 to 24 carbon atoms inclusive, and the vicinal substituents being distributed statistically along said chain lengths, with the proviso that, if y is 0, R 4 and R 5 are not both hydrogen, (b) salts of said aminoalkanols, (c) alkoxylation products of said aminoalkanols with ethylene oxide and/or propylene oxide, and (d) quaternization products of said aminoalkanols.
Claim 3
Dependent Claim
19 words
The process of claim 1, wherein the dispersing agent is a mixture of vicinal aminoalkanols of the formula (I).
Claim 4
Dependent Claim
19 words
The process of claim 1, wherein the dispersing agent is a mixture of vicinal aminoalkanols of the formula (II).
Claim 5
Dependent Claim
16 words
The process of claim 1, wherein the salts of said aminoalkanols are salts of organic acids.
Claim 6
Dependent Claim
23 words
The process of claim 1, wherein the salts of said aminoalkanols are salts of aliphatic carboxylic acids having 2 to 24 carbon atoms.
Claim 7
Dependent Claim
37 words
The process of claim 5, wherein the salts are of aliphatic carboxylic acids selected from the group consisting of alkanoic acids, alkenoic acids, and alkadienoic acids, which optionally can be substituted by hydroxyl groups, and mixtures thereof.
Claim 8
Dependent Claim
23 words
The process of claim 1, wherein the salts of said aminoalkanols are salts of butyric acid, caproic acid or soya oil fatty acid.
Claim 9
Dependent Claim
39 words
The process of claim 1, wherein the alkoxylation products of said aminoalkanols are ethoxylation products formed by addition of ethylene oxide, which have a degree of ethoxylation of 2 to 50 moles of ethylene oxide per mole of aminoalkanol.
Claim 10
Dependent Claim
22 words
The process of claim 8, wherein the degree of ethoxylation is 5 to 35 moles of ethylene oxide per mole of aminoalkanol.
Claim 11
Dependent Claim
26 words
The process of claim 1, wherein the quaternization products of said aminoalkanols are quaternization products formed with benzyl chloride, ethyl bromide, methyl chloride or dimethyl sulfate.
Claim 12
Dependent Claim
45 words
The process of claim 1, wherein the dispersing agent is a mixture of vicinal aminoalkanols wherein the ##STR8## units have the following chain length distribution: ______________________________________
Distribution in Weight
Carbon Atoms in Chain
Percent (Approximate)
______________________________________
11 22
12 30
13 26
14 22
______________________________________
Claim 13
Dependent Claim
45 words
The process of claim 1, wherein the dispersing agent is a mixture of vicinal aminoalkanols wherein the ##STR9## units have the following chain length distribution: ______________________________________
Distribution in Weight
Carbon Atoms in Chain
Percent (Approximate)
______________________________________
15 26
16 35
17 31
18 6
______________________________________
Claim 14
Dependent Claim
33 words
The process of claim 1, wherein the dispersing agent is used in an amount of 0.1 to 5 percent by weight, relative to the weight of the pigment or filler to be treated.
Claim 15
Dependent Claim
33 words
The process of claim 1, wherein the dispersing agent is used in an amount of 0.2 to 2 percent by weight, relative to the weight of the pigment or filler to be treated.
Claim 16
Dependent Claim
13 words
The process of claim 1, wherein the pigment is a titanium dioxide pigment.
Claim 17
Dependent Claim
13 words
The process of claim 1, wherein the pigment is an iron oxide pigment.
Claim 18
Dependent Claim
14 words
An inorganic or organic pigment or filler treated by the process of claim 1.
Claim 19
Dependent Claim
9 words
Titanium dioxide treated by the process of claim 1.
Claim 20
Dependent Claim
10 words
Iron oxide pigment treated by the process of claim 1.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-09-10 | 1983-03-12 | 1983-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-09-10 | 1987-03-12 | 1987-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-09-10 | 1991-03-12 | 1991-09-11 | $7700.00 | Window Closed / Lapsed |